PCA9536DP NXP

PCA9536 2 4-bit I C-bus and SMBus I/O port Rev. 05 25 January 2010 Product data sheet 1. General description The PCA9536 is an 8-pin CMOS device that provides 4 bits of General Purpose parallel 2 Input/Output (GPIO) expansion for I C-bus/SMBus applications and was developed to 2 enhance the NXP Semiconductors family of I C-bus I/O expanders. I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. The PCA9536 consists of a 4-bit Configuration register (input or output selection), 4-bit Input Port register, 4-bit Output Port register and a 4-bit Polarity Inversion register (active HIGH or active LOW operation). The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input Port or Output Port register. The polarity of the read register can be inverted with the Polarity Inversion register. All registers can be read by the system master. The power-on reset sets the registers to their default values and initializes the device state machine. 2 2 The I C-bus address is fixed and allows only one device on the same I C-bus/SMBus. 2. Features 2 4-bit I C-bus GPIO Operating power supply voltage range of 2.3 V to 5.5 V 5 V tolerant I/Os Polarity Inversion register Low standby current Noise filter on SCL/SDA inputs No glitch on power-up Internal power-on reset 4 I/O pins which default to 4 inputs with 100 k internal pull-up resistor 0 Hz to 400 kHz clock frequency ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101 Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA Packages offered: SO8, TSSOP8 (MSOP8), HVSON8PCA9536 NXP Semiconductors 2 4-bit I C-bus and SMBus I/O port 3. Ordering information Table 1. Ordering information T = 40 C to +85 C amb Type Topside Package number mark Name Description Version PCA9536D PCA9536 SO8 plastic small outline package 8 leads SOT96-1 body width 3.9 mm 1 PCA9536DP 9536 TSSOP8 plastic thin shrink small outline package SOT505-1 8 leads body width 3 mm PCA9536TK 9536 HVSON8 plastic thermal enhanced very thin small SOT908-1 outline package no leads 8 terminals body 3 3 0.85 mm 1 Also known as MSOP8. 4. Block diagram PCA9536 SCL INPUT IO0 FILTER SDA 4-bit IO1 INPUT/ 2 I C-BUS/SMBus OUTPUT CONTROL PORTS IO2 write pulse read pulse IO3 V DD POWER-ON RESET V SS 002aab851 All I/Os are set to inputs at reset. Fig 1. Block diagram of PCA9536 PCA9536 5 NXP B.V. 2010. All rights reserved. Product data sheet Rev. 05 25 January 2010 2 of 22